Arch Linux

kr3ck3n

Member

From: Romania

Registered: 2013-07-14

Posts: 17

[Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

Just upgraded to Xfce 4.12  from 4.10 last week I have just one big issue so far: the display settings panel doesn't work. When I click on it, nothing happens.

If I run from terminal xfce4-display-settings I get "Segmentation fault (core dumped)" and with "gdb xfce4-display-settings" the output says "Reading symbols from xfce4-display-settings...(no debugging symbols found)...done."

What I'm thinking of is a missing dep. Since upgraded to 4.12 I also have a problem with Docky which displays a horizontal black line with shadow on my screen. I don't know if it's related, but this is the output when I run Docky from terminal: http://pastebin.com/cT5XNvWU

Before upgrading to 4.12, for some months, I had issues with xrandr which didn't detect my  laptop screen resolution (full hd) and I had to manually add a profile that fits my normal resolution, otherwise I would had a resolution of 640x480px (this one is shown right now in my nVidia settings in "X Screen Information" section). I don't know if it's related, but I'm just saying.

I'm using bumblebee for my nvidia card & xf86-video-intel for my integrated graphics card. Yeah, I have hybrid graphics (Asus laptop).

General info:
- arch x86_64
- kernel 3.18.6-1
- slim display manager (just saw the warning on archwiki that this one has been abandoned)
- bumblebee & intel driver
- xfce 4.12

Anyone facing the same issue?

Last edited by kr3ck3n (2015-03-22 12:04:01)

toz

Member

Registered: 2011-10-28

Posts: 497

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

If I run from terminal xfce4-display-settings I get "Segmentation fault (core dumped)" and with "gdb xfce4-display-settings" the output says "Reading symbols from xfce4-display-settings...(no debugging symbols found)...done."

While not logged in, try renaming ~/.config/xfce4/xfconf/xfce-perchannel-xml/display.xml. A new one will be re-created on next login. There may be something in that file creating the crash.

What I'm thinking of is a missing dep. Since upgraded to 4.12 I also have a problem with Docky which displays a horizontal black line with shadow on my screen. I don't know if it's related, but this is the output when I run Docky from terminal: http://pastebin.com/cT5XNvWU

Settings Manager >> Window Manager Tweaks >> Compositor tab, and uncheck "Show shadows under dock windows".

kr3ck3n

Member

From: Romania

Registered: 2013-07-14

Posts: 17

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

Docky problem - solved.

I renamed the displays.xml file from my root account, but nothing changed.
This was the original output: http://pastebin.com/g1zqAF9N and this is the new created one: http://pastebin.com/C3v4kZY9

Thank you!

Last edited by kr3ck3n (2015-03-16 21:11:07)

R00KIE

Forum Fellow

From: Between a computer and a chair

Registered: 2008-09-14

Posts: 4,734

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

Try with a new user which will have a completely clean profile, it may well be some stale file that is causing trouble. That said, xfce4-display-settings works fine here when run from xfce4-terminal on arch64 up-to-date.

---

R00KIE
Tm90aGluZyB0byBzZWUgaGVyZSwgbW92ZSBhbG9uZy4K

toz

Member

Registered: 2011-10-28

Posts: 497

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

+1 to the new user test. If that still doesn't isolate the problem, try running an strace again xfce4-display-settings.

kr3ck3n

Member

From: Romania

Registered: 2013-07-14

Posts: 17

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

I made a test users and same thing happens.
I also have the same problem with the root account.

@toz what do you mean by "running an strace again xfce4-display-settings"?

toz

Member

Registered: 2011-10-28

Posts: 497

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

@toz what do you mean by "running an strace again xfce4-display-settings"?

Run:

strace -o ~/trace.txt xfce4-display-settings

...and post back the contents of the file (or a link to the file hosted somewhere).

kr3ck3n

Member

From: Romania

Registered: 2013-07-14

Posts: 17

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

This is the output: http://expirebox.com/download/1a2314f5d … 317fd.html

toz

Member

Registered: 2011-10-28

Posts: 497

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

Is it just the display settings that crashes? What about the others like the Appearance module? There was a recent bug fixed with the Appearance module where the module was crashing due to a missing icon.

Also, try gdb again to get a backtrace. Follow these instructions.

kr3ck3n

Member

From: Romania

Registered: 2013-07-14

Posts: 17

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

Only the display settings crashes.
This is the output of gdb from those instructions: http://pastebin.com/BVPnF3tA

*I searched for those libs with pacman -Q and reinstalled their packages, but no effect.

Last edited by kr3ck3n (2015-03-18 19:35:47)

toz

Member

Registered: 2011-10-28

Posts: 497

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

Maybe related to your xrandr issues?
Probably best now to create a bug report.

kr3ck3n

Member

From: Romania

Registered: 2013-07-14

Posts: 17

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

I was thinking about that also...
I'll create a bug report and see what happens.

I'll update this thread when I'll have something.
Thanks for your time!

kr3ck3n

Member

From: Romania

Registered: 2013-07-14

Posts: 17

Re: [Solved]xfce 4.12: Display Settings - Segmentation fault (core dumped)

xrandr issue after all.

Step 1: reset xrandr with "xrandr -s"
Step 2: add a new xrandr mode.
Step 3: use that xrandr mode.
Step 4: open display settings. Notice that it works and also the added xrandr mode is listed!

Probably the 4.12 upgrade couldn't detect the already added xrandr modes..